Txs God I didn't buy a NIKON!

I believe Nikon cameras use sony sensors. The exception is the nikon J1/ V1 that does use an aptina sensor.
If I am wrong , I have no problem people do point it out.
When it does come to the J1/V1 I am completely sure.
When it does come to nikon 5100.., I am 99% sure it does use sony sensor.

I am not completely sure all nikon DSLR cameras have sensors made by sony but someone more knowledgeable can enlighten that point.